<style>
 body{
       <!-- background: #353f42; -->
    }
 
    *{
        padding: 0;
        margin: 0;
    }
 
    .main {
        width: 320px;
        height: 240px;
        background: ##353f42;
    }
 
    .enter-btn {
        width: 80px;
        height: 30px;
        color: #fff;
        background: #0bc5de;
        line-height: 40px;
        text-align: center;
        border: 0px;
    }
    
    .name-input {
        color: #fff;
        background: #000000;
    }
  
</style>